A brief description of what we mean when we say that two numbers differ by an order to magnitude. This includes a summary of what a Logarithmic is.

A brief description of why we expect the Sun to have been formed in a multiple star system and how we are searching for the other stars formed with it.

A brief description of the difference between random errors and systematic errors in science.

A brief description of the magnitude system in astronomy including the difference between apparent magnitude and absolute magnitude.

A brief description of the Kelvin temperature scale as compared with Fahrenheit and Celsius.

A brief description of what comets are and how they are responsible for meteor showers on the Earth.

A brief description of the Cosmic Microwave Background (CMB) also known as the Primordial Background Radiation.

A brief description of how we classify stars based on their surface temperatures.

A brief description of the concept of hierarchical clustering in astronomy.

A brief description of the main components of the interstellar medium, which is the stuff in space between the stars.